Have anyone tried to get an IP Phone to work via cable modem or DSL using VPN and static IP on the phone to connect to the network. Is this is possible?
The answer is yes. Works just as well as if you were directly connected. As a matter of fact, I run softphone on my cable modem at home and work 1 day a week out of my home. You'll need a higher speed line and a VPN connection.
We have a few people, myself included, that has a 7960 with a shared-line configuration (sharing the same office extension) over a Branch office tunnel. I'd recommend G.729 (make a new region in CCM) when over the Internet... :-)
I have a 7960 phone in my home office that duplicates the phone in my work office. I have a Cisco 806 router with an encrypted GRE tunnel between the 806 and my router at work. It works great.
